
der Unfug
nonsense / mischief
Pointless, foolish, or disruptive behavior that is usually harmless but can cause trouble; nonsense or pranks.
Hört auf mit dem Unfug und macht eure Hausaufgaben!
Stop this nonsense and do your homework!
nonsense / mischief
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nonsense / mischief
Pointless, foolish, or disruptive behavior that is usually harmless but can cause trouble; nonsense or pranks.
Hört auf mit dem Unfug und macht eure Hausaufgaben!
Stop this nonsense and do your homework!
The word consists of the prefix 'Un-' and the old word 'Fug'. The prefix 'Un-' expresses something negative or wrong here. 'Fug' used to mean 'that which is fitting or right'. So 'Unfug' is literally something inappropriate or wrong.
Was ihr da macht, ist wirklich Unfug.
What you're doing there is really nonsense.
'Unfug' is an uncountable noun and is almost always used without an article and only in the singular. You cannot say 'ein Unfug' or 'viele Unfüge'.
Die Kinder haben im Garten nur Unfug im Kopf.
The children have nothing but mischief on their minds in the garden.
Common verbs used with 'Unfug' are 'Unfug machen' (to make mischief / talk nonsense) or 'Unfug treiben' (to get up to mischief). A typical command to stop is: 'Hör auf mit dem Unfug!' (Stop this nonsense!)
Die Schüler trieben während der Pause Unfug im Klassenzimmer.
The students got up to mischief in the classroom during the break.
nonsense
Quatsch and Unfug can refer to silly or disruptive behavior. Quatsch usually sounds more playful and colloquial. Unfug more strongly suggests that the behavior bothers others, causes trouble, or breaks a rule, even though it is usually harmless.

Die Kinder treiben Unfug und verstecken trotz des Verbots die Schuhe ihrer Mitschüler.
The children get up to mischief and hide their classmates’ shoes despite the ban.
Die Kinder machen Quatsch und setzen sich ihre Mützen verkehrt herum auf.
The children fool around and put their hats on backward.